Maven 安装警告答案

【问题标题】：Maven Install WarningsMaven 安装警告
【发布时间】：2018-04-14 23:12:12
【问题描述】：

我是 react 和 webpack 的新手。 Maven 似乎无法处理我的 css 文件。运行 mvn install 在我的 CSS 文件的第一个字符上有一个语法错误意外标记。这与我收到的警告有关吗？

[WARNING] npm WARN webpack-cli@2.0.14 requires a peer of webpack@^4.0.0 but none was installed.

我尝试将 webpack 更新到该版本 4.0.0，但这给了我 babel-loader 问题。我是追踪 Maven 依赖项的新手。任何人都可以接受我的 package.json 配置和 Maven 输出吗？任何帮助将不胜感激。

这是我的 package.json：

{
  "name": "misdeal",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "react": "^15.3.2",
    "react-dom": "^15.3.2",
    "rest": "^1.3.1",
    "webpack": "^1.12.2"
  },
  "scripts": {
    "watch": "webpack --watch -d"
  },
  "devDependencies": {
    "babel-core": "^6.18.2",
    "babel-loader": "^6.2.7",
    "babel-polyfill": "^6.16.0",
    "babel-preset-es2015": "^6.18.0",
    "babel-preset-react": "^6.16.0",
    "webpack-cli": "^2.0.14"
  }
}

这是 maven 安装输出：

[INFO] --- frontend-maven-plugin:1.2:install-node-and-npm (install node and npm) @ misdeal ---
[INFO] Installing node version v4.4.5
[INFO] Copying node binary from C:\Users\btillinghast\.m2\repository\com\github\eirslett\node\4.4.5\node-4.4.5-win-x64.exe to C:\Users\btillinghast\git\misdeal\target\node\node.exe
[INFO] Installed node locally.
[INFO] Installing npm version 3.9.2
[INFO] Unpacking C:\Users\btillinghast\.m2\repository\com\github\eirslett\npm\3.9.2\npm-3.9.2.tar.gz into C:\Users\btillinghast\git\misdeal\target\node\node_modules
[INFO] Installed npm locally.
[INFO]
[INFO] --- frontend-maven-plugin:1.2:npm (npm install) @ misdeal ---
[INFO] Running 'npm install' in C:\Users\btillinghast\git\misdeal
[WARNING] npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
[WARNING] npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.1.3
[WARNING] npm WARN webpack-cli@2.0.14 requires a peer of webpack@^4.0.0 but none was installed.
[INFO]
[INFO] --- frontend-maven-plugin:1.2:webpack (webpack build) @ misdeal ---
[INFO] Running 'webpack.js ' in C:\Users\btillinghast\git\misdeal
[INFO] Hash: 6c98a449ae4f6374613a
[INFO] Version: webpack 1.15.0
[INFO] Time: 1332ms
[INFO]                                           Asset    Size  Chunks             Chunk Names
[INFO]     ./src/main/resources/static/built/bundle.js  756 kB       0  [emitted]  main
[INFO] ./src/main/resources/static/built/bundle.js.map  880 kB       0  [emitted]  main
[INFO]     + 187 hidden modules
[INFO]
[INFO] ERROR in ./src/main/resources/static/App.css
[INFO] Module build failed: SyntaxError: C:/Users/btillinghast/git/misdeal/src/main/resources/static/App.css: Unexpected token (1:0)
[INFO]
[INFO] > 1 | .App {
[INFO]     | ^
[INFO]   2 |   text-align: center;
[INFO]   3 | }
[INFO]   4 |
[INFO]
[INFO]  @ ./src/main/js/containers/App.js 13:0-41

【问题讨论】：

标签： reactjs maven webpack

【解决方案1】：

你需要更新Webpack，你的版本已经过时了，当前版本是4.5.0你安装的版本是1.12.2和Webpack CLI至少需要版本4.0.0

试试npm update -g webpack

如果这不起作用

试试npm install --save-dev webpack

或用纱线

试试yarn add webpack --dev

【讨论】：